Question

If the efficiency of the system is 0.8, calculate the effort required to lift a load of 248 N.

Answer 1

Explanation:

Efficiency =

Power

effort

Power

load

×100

=

5×10

2

2×10

3

×0.2

×100

=

5

4

×100=80%

Answer 2

Answer:

o.31 is efficiency =load by effort